A long, straight wire's magnetic field strength is 1.5 x 10^-8 Tesla
Briefly:E = 4.5 V/m
Relation between electric field and magnetic field in electromagnetic wave are given by:-
c = E / B
Where, c= velocity of light in vacuum,
e = electric field and ,
B= magnetic field.
B = E / c
B = 4.5 / ( 3 x 10^8)
B = 1.5 x 10^-8 Tesla
How strong is the magnetic field?With increasing distance and vice versa, the strength of the magnetic field created by an electric current diminishes. Magnetic field lines form concentric circles, and as one moves away from a conductor, the radius of these circles grows, demonstrating a decreasing magnetic field.
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a driver notices that her 1150-kg car slows down from 85 km/h to 65 km/h in about 6.0 s on the level when it is in neutral. approximately what power (watts and hp) is needed to keep the car travelling at a constant 75 km /h?
-2.214*10^4 W power is needed to keep the car travelling at a constant 75 km /h
From the question, we have
Mass (m)=1150kg
Initial velocity= v_0=85 km/h =23.6 m/s
Final velocity = v=65 km/h=18.06 m/s
acceleration (a)=v-v_0/t=18.06-23.6/6.0=-0.924 m/s^2
The force acting on the car is
F=ma
=(1150 kg)(-0.924 m/s^2)
=-1062.7 N
power (P)=Fv
=(-1062.7)(75(5/18))
=-2.214*10^4 W
Force:
According to physics, the force is an influence that has the power to change how an object moves. When a mass-containing object increases its velocity, such as when it travels away from rest, a force can cause it to accelerate. A push or a pull is a simple method to explain force. Since a force has both a magnitude and a direction, it is a vector quantity. It is calculated using the newton SI unit (N). The letter F is used to represent force. This can provide a clear understanding of how forces are defined because they are thought of as pushes or pulls.
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a 0.850 kg block is attached to a spring with spring constant 13.0 n/m. while the block is sitting at rest, a student hits it with a hammer and almost instantaneously gives it a speed of 49.0 cm/s. part a what is the amplitude of the subsequent oscillations? express your answer with the appropriate units.
The amplitude of the subsequent oscillations is 4.898m.
Solution:
m = 0.850 kg
k = 13.0 N
0.32 = [tex]\sqrt{\frac{13.5}{0.75}*A }[/tex]
= √13.5/0.75
A = 4.898m
Oscillation is defined as the process of repeating fluctuations of a quantity or measure around its time equilibrium value. Oscillation can also be defined as the periodic fluctuation of a material between two values or its mean value.
Waves are said to vibrate. This means regular and repeated round trips. This variation can occur between extremes of position, force, or quantity. Different types of waves have different types of vibrations. Longitudinal wave oscillates parallel to the direction of the wave. Vibration alternates back and forth between two positions or states.
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you are trying to determine the distance to a single galaxy. the galaxy isn't particularly far away, but it also isn't very close. it has a lot of young stars. which would be the best choice for a standard candle to use for this galaxy and why?
The best choice for a standard candle to use for this galaxy is Cepheids Variable (young stars).
Astronomers can use what is known as a change in surface brightness along with the galaxy's color to calculate its distance from Earth. Most galaxies measured this way are millions of light years away. Edwin Hubble was able to show that the Andromeda Nebula is a separate galaxy from the Milky Way by using observations of Cepheid variable stars to estimate the distance to Andromeda.
According to Hubble's law, the distance to a galaxy can be calculated by dividing its receding velocity by the Hubble constant. Distances to nearby stars are determined accurately and precisely using parallax techniques. Viewing a celestial object from different observation points far away changes its position relative to more distant background stars and galaxies.
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a mass on a spring oscillates back and forth and completes one cycle in 0.5 sec. its maximum displacement is 3 cm. write an equation that models this motion.
x(t) = 0.03 cos(4t) is the equation that models the motion of the mass on a spring.
When has a spring's maximum displacement for a given mass?The mass is pushed towards the equilibrium position by the force of the spring. Because the mass is shifting direction as it reaches its maximum displacement location, velocity is zero.
The equation: can be used to simulate the motion of a mass on a spring.
x(t) = A cos(2πf t)
A = 0.03 m since the highest displacement is known to be 3 cm. We also know that the oscillation's period is 0.5 seconds, hence the frequency is:
f = 1/T = 1/0.5 = 2 Hz
Substituting the values of A and f in the equation, we get:
x(t) = 0.03 cos(2π × 2 t)
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imagine an experiment where we uniformly heat three containers, one with water, one with dry sand, one with damp sand. which one would experience the greatest increase in temperature?
Dry sand will experience the greatest increase in temperature when we uniformly heat three containers.
The reason behind is that the intermolecular force between the particles in dry sand is weakest as compared to water particles and damp sand particles. Because of weak intermolecular force, particles have certain amount of distance between each other, due to that on supplying continuous heat those particles feels the increased effect and the similar phenomenon is happened with all particles of dry sand, due to that there is a collective increase in temperature on continuously supply of heat.
Water particles and damp sand has strong intermolecular force of attraction as compared to dry sand, due to that they don't feel much experience of increased temperature.
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a 55kg ice skater is at rest on a flat skating rink. a 198n horizontal force is needed to set the skater in motion. however, after the skater is in motion, a horizontal force of 175n keeps the skater moving at a constant velocity. find the coefficients of static and kinetic friction between the skates and the ice.
The Kinetic frictional coefficient is 0.325, the given body in motion.
What is the Friction coefficient?The ratio between the normal force pressing two surfaces together and the frictional force preventing motion between the surfaces. In most cases, the Greek letter mu is used to represent it. Mu is calculated as being equal to F/N, where F stands for frictional force and N is for normal force. because units of force are used to quantify both F and N. Friction's coefficient has no dimensions. For both static and kinetic friction, the coefficient of friction has a range of values.
Calculations:
The initial frictional force is due to static frictional force=μsmg=horizontal force applies
μsmg = 198
μs = 198/55 × 9.8 = 0.367
The final frictional force is due to kinematic frictional force = μkmg = horizontal force applied 175N
μkmg = 175
μk=175/55*9.8
kinetic frictional coefficient = 0.325.
Hence, the Kinetic frictional coefficient is 0.325, the given body in motion.
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Match each part of a nephron with its function. 1 Glomerulus 2 Distal tubule Bowman's capsule frenal corpuscle) 3 Permeability controlled by hormones: can absorb additional sodium and water 5 Proximal convoluted tubule Match each of the options above to the items below. Receives filtrate from the glomerulus. Permeability controlled by hormones; can absorb additional sodium and water. 1 Increases osmolarity of medulla; absorbs water. Absorbs 80% of filtrate, including water, glucose, and amino acids Help Save & E Seved (renal corpuscle 3 controlled by hormones; can absorb additional sodium and water 5 Proximal convoluted tubule Match each of the options above to the items below. Receives filtrate from the glomerulus. Permeability controlled by hormones, can absorb additional sodium and water. Increases osmolarity of medulla; absorbs water, Absorbs 80% of filtrate, including water, glucose, and amino acids. Filtration of plasma
While large proteins and cells are kept in the blood as long as the kidney filter is functioning normally, small blood molecules freely enter Bowman's space.
What is the main function of part nephron?By keeping the vital plasma proteins from the blood and ensuring selective ultrafiltration, the kidney glomerulus maintains its function. A fenestrated endothelium, GBM, and podocytes make up its three main parts, which together make up the glomerular filtration assembly.
Therefore, A glomerular filtrate is created when fluid and solutes from the blood are removed at the glomerulus in the nephron.
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a 66.5-kg boy is surfing and catches a wave which gives him an initial speed of 1.60 m/s. he then drops through a height of 1.64 m, and ends with a speed of 8.51 m/s. how much nonconservative work (in kj) was done on the boy? kj
Non-conservative work done is calculated to be = 1.252 kJ. Non-conservative forces are those forces which result in a loss of mechanical energy from the system.
What is non-conservative work?Nonconservative force is when the work depends on the path taken. is An example of a nonconservative force is friction.
Given:
Mass , m = 66.5 kg; Initial speed , u = 1.6 m/s
height of 1.64 m ; Final speed , v = 8.51 m/s
Work done by the non conservative forces is equal to the sum of total change in kinetic and potential energy:
As we know that, W= 1/2*m (v²- u²) + (0 -m*g*h)
=1/2* 66.5 * (8.51²- 1.6²) - (66.5* 9.81 * 1.64)
= 2322.84 -1069.87
= 1252.97 joules
=1.252 kJ
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speed of 0.986 c what would be the momentum of this proton? express your answer with the appropriate units.
The momentum of the proton with speed of 0.986 c is 4.20 × 10⁸ kJ - m/s.
Momentum is defined as the product of the mass of a particle and its velocity. Momentum is a vector quantity, which means it has both magnitude and direction. Isaac Newton's second law of motion says that the time rate of change of momentum is equal to the force acting on the particle.
Calculate the momentum by using the formula:
p = (m₀v)/√(1 - v²/c²)
Substituting the values we get,
⇒ p = (1.67 × 10⁻²⁷ × 0.986 c) / √{1 - (0.986/c)²}
⇒ p = (1.67 × 10⁻²⁷ × 0.986 c) / √{1 - (0.986)²}
⇒ p = 1.404 × 10⁻²⁶ c
⇒ p = 4.20 × 10⁸ kJ - m/s
Hence, the momentum of the proton is 4.20 × 10⁸ kJ - m/s.
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) the intensity of solar radiation near the earth is 1.4 kw/m^2. what force is exerted by solar radiation impinging normally on a 5.0 m^2 perfectly reflecting panel of an artificial satellite orbiting the earth?
The force exerted by the solar radiation is Force = 4.665 × [tex]10^-^1^1[/tex] N
The intensity of the given solar radiation is [tex]1.4 kw/m^2[/tex] = 1.4× [tex]10^3[/tex] W/m²
Given area of the panel is [tex]5 m^2[/tex]
Speed of the sound is 3 × [tex]10^8[/tex] m/s
Thus Pt = Total solar radiation pressure
Pt = [tex]2\frac{L}{c}[/tex]
Pt = [tex]2\frac{1.4 * 10^-^3}{3 * 10^8}[/tex]
which on further solving will give us :
Pt = 0.933 × [tex]10^-^1^1[/tex]
Total solar radiation pressure = 0.933 × [tex]10^-^1^1[/tex] Ws/m³
Force = Pressure * Area
Force = 0.933 × [tex]10^-^1^1[/tex] × 5
Force = 4.665 × [tex]10^-^1^1[/tex] N
The force exerted by the solar radiation is Force = 4.665 × [tex]10^-^1^1[/tex] N
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Schizophrenia is associated with an excess of receptors for Select one:
O a. acetylcholine O b. dopamine O c norepinephrine O d. serotonin
The "binge-then-purge" cycle of overeating and dieting, often using vomiting, laxatives, or fasting, is characteristic of which disorder? Select one:
O Histrionic Disorder
O Body Dimorphic Disorder
O Bulimia Nervosa
O Anorexia Nervosa
Jacob began experimenting with alcohol consumption at his fraternity at Appstate. He was confused when alcohol made him energetic at first but ultimately drowsy. He asked Dr. Ludwig about it and learned that alcohol affects both of these contradictory neurotransmitters: Select one:
O Norepinephrine and Serotonin Serotonin and GABA
O Glutamate and GABA
O Seagrams and Budweiser If the neurotransmitter serotonin is abnormally low in your brain you will most likely suffer from Select one: O a. panic attacks O b. depression O c. dissociative disorders. O d. schizophrenia.
The D2 receptors were much higher in schizophrenia patients compared to control subjects, which is consistent with the idea that schizophrenia is characterized by an excess of dopamine receptors.
The right answer is "dopamine O."
Are you calmer when taking dopamine?Presynaptic (excessive release of dopamine from dopamine nerve terminals) or postsynaptic (excessive dopamine uptake) dopamine overactivity (an increase in the density of D2 receptors or an increase in postreceptor action).
What occurs when overstimulated dopamine receptors?Dopamine overproduction, or excessive dopamine concentration in some regions of the brain but insufficient dopamine in other regions, is associated with increased competitiveness, aggression, and inability to regulate one's impulses. Disorders including ADHD, binge eating, addiction, and gambling are among disorders that can result from it.
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suppose etienne wants to calculate the velocity of the mass in the simulation, given the period, t, mass, m, and spring constant, k. why does hakim say it is not possible to use the kinematic equation v
There is currently no established method that can replicate gravity other than actual mass or acceleration.
The mass physics classroom's focal point is...
The location of the mass's center A position relative to an object or set of objects is known as the center of mass. It is the system's average location, weighted by the mass of each component. The center of mass is situated at the centroid for straightforward stiff objects with homogeneous density.
Mass simulation: what is it?
By 1800, the concept of denudation—the surface lowering of the land caused by mass waste and erosion—had been developed. It is implied by the term "planation" that denudation will continue until the land is reduced to a low plain just above the base level of erosion, which is usually the sea.
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the wave velocity of the first overtone frequency of a string is 75 m/s. what is the wave velocity of the fundamental frequency? opensax
The wave velocity of the fundamental frequency is 75 m/s.
The wave velocity of the fundamental frequency of a string can be calculated using the equation:
Wave Velocity = 2 x Overtone Frequency x Wavelength
Substitute the given values in the equation
Wave Velocity = 2 x (1/2 x 75 m/s) x Wavelength
Solve for the wavelength:
Wavelength = Wave Velocity / (2 x (1/2 x 75 m/s))
Substitute the given wave velocity in the equation:
Wavelength = 75 m/s / (2 x (1/2 x 75 m/s))
Simplify the equation:
Wavelength = 75 m/s / 75 m/s
Solve for the wavelength:
Wavelength = 1 m
Substitute the wavelength in the equation:
Wave Velocity = 2 x (1/2 x 75 m/s) x 1 m
Solve for the wave velocity:
Wave Velocity = 75 m/s
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when leafs are placed in tense heat and pressure they becomes fossils by appearing on rocks as a thin dark image. this is called
When leafs are placed in tense heat and pressure they becomes fossils by appearing on rocks as a thin dark image, this is called as taphonomy.
When covered, natural remaining parts enter a long and complex interaction by which their substance is changed into fossil structure. The investigation of this cycle is called taphonomy. It covers with the investigation of diagenesis, the arrangement of cycles that transform residue into rock.
A few fossils are protected as movies of carbon under the intensity and tension of profound entombment. For an enormous scope, this makes coal beds. Numerous fossils, particularly shells in youthful rocks, go through some recrystallization in groundwater. In others their substance is broken down, leaving open space (a shape) that is topped off with minerals from their environmental factors or from underground liquids (framing a cast).
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(Complete question) is:
When leafs are placed in tense heat and pressure they becomes fossils by appearing on rocks as a thin dark image. this is called as ______.
what wrinkle resistance angle would you predict for a fabric specimen having an absorbance of 0.360? (round your answer to two decimal places.)
For a fabric specimen having an absorbance of 0.360,The absorbance value is 369.89.
Wrinkle-free or permanent ironing or permanent ironing is a textile finishing process that avoids wrinkles and creases and improves the appearance of items. Most cellulosic fabrics and cellulosic fabric blends tend to wrinkle or wrinkle.
Calculation:-
The equation is
y = 321.878 + 156.711x
= 321.878 + 156.711 × (0.360)
= 396.89.
Describes fabrics or garments that have been treated to retain their smooth appearance, shape, wrinkles, and/or creases after washing. Such garments require little or no ironing, especially if the garment has been tumble dried. Also called permanent press finish.
Wool woven shirts do not wrinkle easily, whereas 100% linen and cotton linen blend shirts naturally wrinkle easily. Fabrics made from synthetic materials that have inherent stretches, such as nylon and spandex, are also wrinkle-resistant.
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The conservation of momentum is most closely related to Newton's?
The conservation of momentum is most closely related to Newton's third law.
According to the conservation of momentum, momentum is neither created nor destroyed, although it can change from one form to another.
According to Newton's third law, for every action, there is an opposite reaction, and energy is neither created nor destroyed. Rather the energy is changed from the action to the reaction in a given system and the amount of energy remains the same.
Both the conservation of momentum and Newton's third law imply that energy in a system can be converted but the value remains the same in a system and hence is closely related.
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a planet of mass =7.15×1024 kg orbits a star of mass =1.95×1029 kg in a circular path. the radius of the orbit is =5.95×107 km. what is the orbital period planet of the planet in earth days?
The angular frequency obtained is 3.76 × 10⁻⁷ rad/sec. The orbital period planet of the planet in Earth days is 193.51 days.
Given data:
Mass of the planet (m) = 7.15 × 10²⁴ kg
Mass of the star (M) = 1.95 × 10²⁹ kg
Radius of the orbit (r) = 5.95 × 10⁷ km
Orbital period is given by T = (2π) ÷ ω
we know that,
(GMm) ÷ (R)² = mω²R
ω = √(GM) ÷ R³
On substituting the value:
ω = 3.76 × 10⁻⁷ rad/sec
The time period is:
T = (2π) ÷ 3.76 × 10⁻⁷
T = 16719389.62 sec
Hence on converting from seconds to days the time period obtained is:
T = 193.51 days.
Therefore, The orbital period planet of the planet in Earth days is 193.51 days.
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a plane flies horizontally at an altitude of 5 km and passes directly over a tracking telescope on the ground. when the angle of elevation is ?y3, this angle is decreasing at a rate of ?y6 radymin. how fast is the plane traveling at that time?
When a plane flies horizontally at an altitude of 5 km and passes directly over tracking telescope on the ground, then the plane is traveling at the speed of 8.69 km/min.
What is angle of elevation?The angle of elevation is widely used for height and distance in trigonometry. It is defined as the angle between horizontal plane and oblique line from the observer's eye to any object above his eye.
tan(θ) = opposite / adjacent
tan(θ) = y/x
x tan(θ) = y
x = y/tan(θ)
x = 5/tan( π/3)
dx/dt * tan(θ) + x * sec²(θ) * dθ/dt = d y /dt
As altitude remains the same, d y/dt = 0
dx/dt * tan(π/3) + 3/tan(π/3) * sec²(π/6) * -π/6 = 0
dx/dt = [5/tan(π/3) * sec²(π/3) * π/6} / tan(π/3)]
= 5/0.018* 3413.6 * 0.52/ 0.018
= 8.69 km/min
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Note: The question given on the portal is incomplete. Here is the complete question.
Question: A plane flies horizontally at an altitude of 3 km and passes directly over a tracking telescope on the ground. when the angle of elevation is π/6, this angle is decreasing at a rate of π/4 rad/min. how fast is the plane traveling at that time?
if you hold one end of a metal nail against a piece of ice, the end in your hand soon becomes cold. which description is right? 1. temperature flows from the ice to your hand.
Right description: Your hand does not experience a flow of cold from the ice.
Does the ice's cold transfer to your hand to explain?Heat will transfer from a warmer object to a colder one if the temperatures of the two objects differ. For instance, when you hold an ice cube, heat from your warm hand is transmitted to the cold ice, melting it. Due to heat energy loss, your hand feels cold.
Why is it wrong to claim that a hot object warms a cold one?It is accurate to state that a rise in one object's thermal energy equals a decrease in the other's thermal energy, not temperature. The claim is true if the substance of the hot and warm objects is the same.
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PLEASE ANSWER QUICK!
Read over this situation where the same force is applied to two different objects with different masses and answer the question that follows.
Two students are having a race with toy cars.
10 N of force is applied to Bob's 5 kg car.
Larry also applies 10 N of force to his car, which has a mass of 8 kg.
.
.
Use Newton's 2nd law to explain which car will have a greater acceleration, allowing
it to win the race.
Answer: Bob will win the race
Explanation:
Force on both cars= 10N
Mass of Bob's car= 5 kg
Mass of Larry's car= 8 kg
According to Newton's 2nd Law of Motion,
Force(F)= Mass(m) * Acceleration(a)
=> Acceleration(a)= Force(F)/Mass(m)
Therefore,
Acceleration of Bob's car= Force on Bob's car/Mass of Bob's car
=10 N/ 5 kg
=2 ms^-2
Acceleration of Larry's car= Force on Larry's car/Mass of Larry's car
=10N/ 8 kg
=1.25 ms^-2
Since Bob's car has greater acceleration than Larry's car, Bob will win the race.
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will the particle move to the right (in the positive x -direction) or to the left (in the negative x -direction), and why?
Yes, the particle moves in the positive x-direction (to the right) or the negative x-direction (to the left) due to the forces of attraction and repulsion.
When the particle's velocity is positive, it is travelling to the right. When the velocity is negative, it also moves to the left. A body with a higher mass may have a lower moment of inertia than a body with a lower mass. This relies on the mass distribution and axis with respect to which we are computing the moment of inertia. In real-world situations, we frequently avoid dealing with particles.
The time it takes for a constant force to bring a particle to rest, on the other hand, is represented by its momentum.
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at nigeria falls. if 505 kg of water fall a distance of 50 m what is the increase in the internal energy of the water at the bottom of the falls? assume all initial potential energy goes into increasing the waters internal energy and that the kinetic energy is zero
help pleaseee
The increase in the internal energy of the water at the bottom of the falls is 247,450 J.
What is the potential energy of a body at a given height above the ground?The potential energy of a body at a given height above the ground is given as the energy that a body possesses due to the height it is above the ground.
Potential energy is given mathematically as, PE = m * g * h
where;
PE is equal to the potential energy of the bodym is the mass of the bodyg is the acceleration due to gravity h is the height of the body above the groundFor the given mass of water, the increase in the internal energy of the body is calculated as follows:
Change in internal energy = Potential energy
Change in internal energy = 505 * 9.8 * 50
Change in internal energy = 247,450 J
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two streams merge to form a river. one stream has a width of 8.2 m, depth of 3.4 m, and current speed of 2.3 m/s. the other stream is 6.8 m wide and 3.2 m deep, and flows at 2.6 m/s. if the river has width 10.5 m and speed 2.9 m/s, what is its depth?
The depth of the river is calculated to be 3.7 m
Given,
Width of stream 1 = 8.2 m
Depth = 3.4 m
Current speed = 2.3 m/s
Width of second stream = 6.8 m
Depth = 3.2 m
Current speed = 2.6 m/s
Width of the river = 10.5 m
Current of river 3 = 2.9 m/s
For stream 1
h₁ = 3.4 m ,b₁= 8.2 m ,v₁= 2.3 m/s
For stream 2
h₂ = 3.2m ,b₂= 6.8 m , v₂=2.6 m/s
For river 3
b= 10.5 m ,v= 2.9 m/s
Lets take depth of the river = h
Total discharge should be constant.
We know that discharge
Q= A v
A=Area ,v=velocity
Q₁+Q₂ = Q
By putting the values
h₁b₁v₁ + h₂ b₂ v₂ = b h v
3.4 x 8.2 x 2.3 + 3.2 x 6.8 x 2.6 = 10.5 x 2.9 x h
h= 3.78 m
Therefore, the depth of the river is 3.78 m
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you have a galaxy with a recession velocity of 17,500 km/s. if hubble's constant is 70 km/s/mpc, what would be the distance to this galaxy?
The distance to this galaxy with a recession velocity of 17,500 km/s and hubble's constant is 70 km/s/mpc is 1225000 km
speed=distance/constant
distance=speed×constant
distance=17500×70
distance=1225000 km
Distance is the length between two points or things, and it is directionless. Since distance is a scalar property, it only takes into account the total magnitude and ignores the start and finish locations. Being a scalar attribute, distance can only be positive or zero; it cannot be the opposite. Although kilometers (km) and centimeters (cm) or millimeters (mm) can also be used to express shorter distances, the meter (m) is the most common unit of measurement for distance (mm). When calculating distance, the letter D is frequently used to denote the distance traveled.
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in double replacement reactions, why will two metals not combine with each other when products are formed?
Two metals don't combine to form a new compound in a double replacement reaction because in this reaction ions are exchanged and metals can only lose electrons and not gain any.
What are Metals?Metals are a group of elements distinguished by a propensity to lose electrons. Metals are effective conductors of heat and electricity. Metals typically exist as solids at room temperature and normal atmospheric pressure, with the exception of mercury, which is a liquid. Metals belong to a class of substances that exhibit strong thermal and electrical conductivity, as well as malleability, ductility, and high-light reflection.
What is a Double replacement reaction?The positive and negative ions of two ionic compounds swap positions during a double-replacement reaction to create two new compounds. A and C are positively charged cations in the usual form of a double-replacement reaction (also known as a double-displacement reaction), whereas B and D are negatively charged anions. In an aqueous solution, double-replacement reactions typically take place between compounds. A reaction must produce one of the following in order to take place: a solid precipitate, a gas, or a molecular substance like water. Example AB + CD= AD + CB.
Hence, when two compounds of similar nature are reacted they do not combine as one compound must donate whereas the other compound must accept electrons in order to combine.
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two current carrying wires are close and parallel to each other and have currents with the same magnitude. of the two currents were in the same direction, how would the magnetic fields of t he wires be affected?
A magnetic field is produced by an electric current. Depending on the fields' orientation, they can either attract or repel.
How do magnetic field produce electric current?Imagine your right thumb pointing in the direction of the current to determine the direction of the magnetic field on a wire. Your right hand's fingers will circle the wire in the same direction as the magnetic field. You can tell that the magnetic fields are aligned and will resist each other if two currents are running in the opposing directions.
The magnetic field will be opposing and the wires will attract when the currents run in the same direction.
Due to relativistic length contraction, electrons will "see" a higher density of electrons in the other wire if the currents are flowing in the opposite directions. Additionally, the wires will reject one another.
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what is the magnitude of the emf induced between the two sides of the shark's head?
The induced emf between the two sides of the shark's head is 44*10-6 volts. the process whereby changes in magnetic flux cause a coil to develop a potential difference.
Here's the complete question:A scalloped hammerhead shark swims at a steady speed of 1.0 m/s with its 83-cm-wide head perpendicular to the earth's 52 μT magnetic field. What is the magnitude of the emf induced between the two sides of the shark's head? Express your answer using two significant figures.
How to solve ?Given:
The speed of scalloped hammerhead shark is: va=1.0ms
The width of head is:
wa=83cm=0.83m.
The magnetic field is:
Ba=52μT=53×10−6T
The expression for the change in area through which magnetic field moves is,
ΔAa=Δla.wa
Here,
Δla and wa are change in length and width respectively.
The expression for the speed of scalloped hammerhead shark is,
va=Δla/Δt
Here ,
Δt is time interval.
The expression for the magnetic flux is,
Δϕa=Ba.ΔAa
The expression for the induced emf by using the Faraday's law is,
ea=Δϕa/Δt
Solving for the induced enf:
ea=Ba.Δla.wa/Δt
⟹Ba.wa.Δla/Δt⟹Ba.wa.va
The expression for the magnitude of emf induced between the two sides of shark's head is,
ea=Ba.wa.va
Solving for the magnitude of emf induced between the two sides of shark's head:
ea=53×10−6T×0.83m×1.0m/s⟹43.99×10−6V⟹≈44×10−6V
Thus the magnitude of emf induced between the two sides of shark's head is 44×10−6V.
What distinguishes induced emf from electromagnetic fields?According to Faraday's Law, if a magnetic flux across a loop changes, an induced emf results. The term "motional emf" is used to describe an emf that is changing because a conductor is moving in some way in a magnetic field.
What is another name for EMF?When no current is flowing, electromotive force equals the potential difference. the fact that both EMF and potential difference (V) are expressed in volts, but they are not the same thing.
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how did the discoveries of copernicus and other astronomers affect the way people viewed the universe? a. their experiments proved that the ancient classical astronomers had been correct about how the universe functioned. b. their observations supported the ptolemaic view of the universe. c. their discoveries reinforced traditional church teachings on the relationship between earth and the stars and other planets. d. their observations proved that the universe was heliocentric.
The discoveries of Copernicus and other astronomers proved that universe was heliocentric which affected the way people viewed the universe.
Thus, the correct answer is D.
What is the heliocentric system?The word "helios" in Greek meаns "sun." Heliocentric meаns thаt the sun is аt the center. А heliocentric system is one in which the plаnets revolve аround а fixed sun. This theory wаs first proposed by Nicolаus Copernicus. Copernicus wаs а Polish аstronomer. He first published the heliocentric system in his book: De revolutionibus orbium coelestium, "On the revolutions of the heаvenly bodies," which аppeаred in 1543.
After 1,400 yeаrs, Copernicus wаs the first to propose а theory which differed from Ptolemy's geocentric system, аccording to which the eаrth is аt rest in the center with the rest of the plаnets revolving аround it. The clаim thаt аll plаnets revolve аround the sun hаd been rаised in аncient times, but Copernicus wаs the first to succeed in describing the movements of the plаnets using аn аstronomicаl theory which plаced the sun аt the center.
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A 0.039 kg bullet moving at 475 m/s strikes a stationary 5.7 kg wooden block. The bullet passes through the block and leaves with a velocity of 284 m/s. If the block was originally at rest, how fast does it move after being hit by the bullet?
use units and work out
The velocity of the block after it is hit by the bullet is 1.307 m/s.
What is velocity?Velocity is the rate of change of displacement.
To calculate the velocity of the block after it is hit by the bullet, we use the formula below.
Formula:
v = (mU-mV)/M............. Equation 1Where:
v = Final velocity of the blockU = Initial velocity of the bulletV = Final velocity of the bulletM = Mass of the blockFrom the question,
Given:
m = 0.039 kgM = 5.7 kgU = 475 m/sV = 284 m/sSubstitute these values into equation 1
v = [(0.039×475)-(0.039×284)]/5.7v = (18.525-11.076)/5.7v = 1.307 m/sHence, the velocity of the block is 1.307 m/s.
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increasing the brightness of a beam of light without changing its color will increase
The photons speed will rise if a light beam is made brighter without altering its hue.
What is the simple definition of light?Light is indeed a form of electromagnetic radiation which makes things visible or enables the human eye to see. It can also be described as radiation that is seen by the human eye. Light reaches photon, which are minuscule energy bundles.
What is light and its types?Light that is visible to the human eye alone. It is an electromagnetic energy type. This sun is the primary source of all visible light. Lamps, flashlights, light bulbs, and other objects can also emit it. Another electromagnetic energy that generates heat is infrared light.
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